<ngx-chess-board #board (moveChange)="onMove($event)"> says is unknow but i know i have decleared it too ngx-chess-board' is not a known element: 1. If 'ngx-chess-board' is an Angular component, then verify that it is included in the '@Component.imports' of this component. 2. If 'ngx-chess-board' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@Component.schemas' of this component to suppr Continue reading...